The Unite trade union in the UK has warned of potential strike action at London Luton Airport, according to Travel Mole.
Such an occurrence could threaten a number of flights in the build-up to Christmas.
Travel Mole reported that the potential strike could cover 80 ground handling staff. They are currently being balloted for strike action over the reported delay of a £500 recruitment and retention bonus.
Ryanair and EasyJet fly to and from Luton, but Wizz Air would be the most affected carrier if the strikes go ahead, Travel Mole said.